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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Test methods for welding consumables—Part 2:Preparation of single-run and two-run technique test specimens in steel
WITHDRAWN published on 24.2.2016
Selected format:Test methods for welding consumables—Part 3:Preparation and testing of a fillet weld specimens for T-joint
WITHDRAWN published on 23.12.2010
Selected format:Fabrication method of ring test specimen for filament -winding reinforced plastics
WITHDRAWN published on 31.3.1989
Selected format:2-Amino-4-acetamino anisole
WITHDRAWN published on 23.12.2010
Selected format:p-Phenylenediamine
WITHDRAWN published on 23.12.2010
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Reactive red M-2BE(C.I. Reactive red 194)
WITHDRAWN published on 23.12.2010
Selected format:Reactive blue KN-RGB (C.I.Reactive blue 250)
WITHDRAWN published on 23.12.2010
Selected format:Determination of acidity of gasoline,kerosene and diesel fuels
WITHDRAWN published on 8.11.1977
Selected format:-
WITHDRAWN published on 1.1.1986
Selected format:Latest update: 2026-03-30 (Number of items: 2 269 988)
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